/Engine/Source/Runtime/Slate/Public/Framework/Docking/WorkspaceItem.h
bool HasChildrenIn ( const [TArray](API\Runtime\Core\Containers\TArray)< [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [FTabSpawnerEntry](API\Runtime\Slate\Framework\Docking\FTabSpawnerEntry) > > & AllowedSpawners )